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Document that the returned pointer should be freed even if the number

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of items returned is 0.
This commit is contained in:
Nate Lawson 2005-05-20 05:04:22 +00:00
parent 1c9ec53854
commit 96ab794b26
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=146432
3 changed files with 10 additions and 4 deletions
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7
share/man/man9/devclass_get_devices.9
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@ -28,7 +28,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd June 16, 1998
.Dd May 19, 2005
.Dt DEVCLASS_GET_DEVICES 9
.Os
.Sh NAME
@ -46,7 +46,10 @@ return the list in
and the count in
.Fa *devcountp .
The memory allocated for the list should be freed using
.Fn free "*devlistp" "M_TEMP" .
.Fn free "*devlistp" "M_TEMP" ,
even if
.Fa *devcountp
is 0.
.Sh RETURN VALUES
Zero is returned on success, otherwise an appropriate error is returned.
.Sh SEE ALSO

5
share/man/man9/devclass_get_drivers.9
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@ -28,7 +28,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd April 3, 2005
.Dd May 19, 2005
.Dt DEVCLASS_GET_DRIVERS 9
.Os
.Sh NAME
@ -47,6 +47,9 @@ and the number of drivers in the list in
.Fa *countp .
The memory allocated for the list should be freed using
.Fn free "*listp" "M_TEMP" .
even if
.Fa *countp
is 0.
.Sh RETURN VALUES
Zero is returned on success, otherwise an appropriate error is returned.
.Sh SEE ALSO

2
sys/kern/subr_bus.c
View File

@ -1098,7 +1098,7 @@ devclass_get_softc(devclass_t dc, int unit)
* An array containing a list of all the devices in the given devclass
* is allocated and returned in @p *devlistp. The number of devices
* in the array is returned in @p *devcountp. The caller should free
* the array using @c free(p, M_TEMP).
* the array using @c free(p, M_TEMP), even if @p *devcountp is 0.
*
* @param dc the devclass to examine
* @param devlistp points at location for array pointer return